Rescuing Exception within Ruby Interpolation in a HAML Document -

I have an interpolated ruby ​​code in a HAML document that looks like the following:

 : Javascript A = {'something': "# {model.attribute.present ?? method (parameter): ''}"}   
 However, the method (parameter) is certain parameters With the exception being throwing, I can save the exception. When the exception is thrown, I would like to map 'some' key with something else.  
 I am not making clear on the correct syntax how I have tried to do some things with HAML code / Ruby interpolation, but it is not working.  
 Thank you!   
 
 
 You should take this line  
  model. Attribute.present? ? Method (parameter): ''   
 and make a helper method out of it  
  class ApplicationHelper def some_method model.attribute.present? ? Method: This is your value in case of "rescue" some more "#definance end"   
 Then your ham becomes trivial  
 : Javascript A = {'Something': "# {some_method}"}